EWAT420B-SSA2 - Air Conditioning DAIKIN - Free user manual and instructions
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| Product Type | Water Cooled Chiller |
| Brand | Daikin |
| Model | EWAT420B-SSA2 |
| Cooling Capacity (nominal) | 140 kW (400 V / 50 Hz) |
| Dimensions (H x W x D) | 1800 mm x 2200 mm x 1200 mm |
| Weight | 1650 kg |
| Power Supply | 400 V / 3-phase / 50 Hz |
| Refrigerant | R-410A |
| Operating Ambient Temperature Range | -10°C to 46°C |
| Sound Power Level (nominal) | 85 dB(A) |
| Primary Functions | Cooling, water temperature control, multiple compressor staging |
| Maintenance | Annual inspection of refrigerant charge, coils, and electrical components |
| Safety Features | High pressure switch, low pressure switch, freeze protection, oil level safety |
| Spare Parts Availability | Authorized Daikin distributors; standard wear parts like filters and sensors |
| Repairability | Modular design with replaceable compressors, fans, and control boards |
| General Information | Scroll compressors, microchannel condenser, user-friendly controller with BMS interface |
Frequently Asked Questions - EWAT420B-SSA2 DAIKIN
What type of refrigerant does the Daikin EWAT420B-SSA2 use?
The chiller uses R-410A refrigerant, which is a common HFC blend for medium to large commercial applications.
What is the cooling capacity of this model?
The nominal cooling capacity is approximately 140 kW (about 40 tons) at standard conditions (400 V, 50 Hz).
What are the electrical power requirements?
It requires a 400 V, 3-phase, 50 Hz power supply. Consult the manual for exact wire size and protective devices.
How do I clean the condenser coils?
Use a soft brush or low-pressure water to remove debris. Avoid damaging the microchannel coils. Annual cleaning is recommended.
What does error code E1 indicate?
Error code E1 typically indicates a high pressure switch activation. Check for blocked condenser or refrigerant overcharge.
Can the chiller operate in freezing ambient temperatures?
Yes, with the optional low-ambient kit, it can operate down to -10°C. Without kit, minimum ambient is 0°C.
What is the recommended water flow rate?
The recommended flow rate is approximately 24 m³/h based on a 5°C temperature difference. Use the pressure drop chart in the manual.
How do I reset the safety alarms?
First, clear the cause of the alarm. Then press the reset button on the controller or cycle power off and on. Refer to manual for specific alarm codes.
Is the EWAT420B-SSA2 compatible with BMS systems?
Yes, it supports Modbus and BACnet communication protocols for easy integration.
What is the warranty period for this chiller?
Daikin typically offers a 2-year warranty on parts and compressor, but extended warranty options are available through authorized dealers.
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USER MANUAL EWAT420B-SSA2 DAIKIN
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Product information
Brand : DAIKIN
Model : EWAT420B-SSA2
Category : Air Conditioning